Un detector de ondas de radio casero utiliza bolas de papel de aluminio

15 de mayo de 2026

Reportado por IA

Un nuevo proyecto práctico muestra cómo construir un transmisor y receptor de radio sencillo utilizando artículos domésticos comunes como papel de aluminio.

La guía explica que las señales de radio siguen siendo fundamentales para la tecnología cotidiana, desde las radios de los coches y las torres de telefonía móvil hasta el GPS, el Wi-Fi y las conexiones Bluetooth. Señala que la llamada Edad de Oro de la Radio no terminó realmente en la década de 1950, ya que la televisión y los servicios inalámbricos modernos siguen dependiendo de las mismas ondas.

MIT builds terahertz microscope to observe quantum motions in superconductors

18 de marzo de 2026 Reportado por IA Imagen generada por IA

Physicists at MIT have developed a new microscope using terahertz light to directly observe hidden quantum vibrations inside a superconducting material for the first time. The device compresses terahertz light to overcome its wavelength limitations, revealing frictionless electron flows in BSCCO. This breakthrough could advance understanding of superconductivity and terahertz-based communications.

Space weather may have blurred SETI's search for alien signals

Researchers at the SETI Institute suggest that solar wind and plasma from stars could distort radio signals from distant intelligent life, making them harder to detect. This means past searches may have overlooked potential evidence by focusing on narrowband signals. Adjusting detection methods could improve future chances of discovery.

China’s ‘land aircraft carrier’ charges flying drone with microwave beam

19 de abril de 2026 Reportado por IA

A team from Xidian University has developed a car-mounted microwave wireless power system that kept fixed-wing drones airborne for up to 3.1 hours. The system uses GPS positioning, dynamic tracking, and onboard flight controls to maintain alignment between the emitter and drone during flight. The findings were published on March 25 in the peer-reviewed journal Aeronautical Science & Technology.

Tecnología

Japanese team develops method to detect quantum W states

Ciencia

Physicists revive 1773 experiment to hunt dark matter

Ciencia

Search for radio signals from K2-18b finds no signs of alien civilization

NYU physicists create sound-levitated time crystal breaking Newton's third law

Physicists at New York University have developed a new type of time crystal using sound waves to suspend tiny styrofoam beads, resulting in nonreciprocal interactions that defy Newton's third law of motion. The compact, visible system oscillates in a steady rhythm and was detailed in Physical Review Letters. Researchers suggest potential applications in quantum computing and insights into biological rhythms.

New light-based sensor detects early cancer biomarkers in blood

17 de febrero de 2026 Reportado por IA

Scientists have developed a light-based sensor that can identify tiny amounts of cancer biomarkers in blood samples, potentially enabling earlier detection than traditional scans. The technology combines DNA nanostructures, CRISPR, and quantum dots to produce a clear signal from just a few molecules. Tests on lung cancer patient serum showed promising results at sub-attomolar levels.

Researchers propose quantum method for messaging into past

Physicists at MIT have developed a theoretical technique inspired by the film Interstellar to send messages backwards in time using quantum entanglement. The approach mimics closed time-like curves and surprisingly improves communication through noisy channels. While actual time travel remains impossible, the idea could enhance conventional systems.

14 de mayo de 2026 11:51